* {
    margin: 0;
    padding: 0;
}

@media screen and (max-width: 767px) {
    /* 头部模板 start */
    body {
        width: 100vw;
    }
    header {
        display: flex;
        box-sizing: border-box;
        position: fixed;
        top: 0;
        justify-content: space-between;
        width: 100vw;
        height: 50px;
        padding: 0 14px 0 14px;
        line-height: 50px;
        color: #fff;
        font-size: 20px;
        background-color: #81ccff;
        z-index: 999;
        display: none;
    }
    header span:first-of-type {
        font-size: 35px;
        margin-top: -3px;
    }
    header button {
        font-size: 40px;
        color: #fff;
        border: none;
        background-color: transparent;
    }
    .content_right_long {
        display: flex;
        display: none;
    }
    .content_right_long ul li {
        overflow: visible !important;
        left: 0;
    }
    .content_right_long .ing {
        margin-top: 4px;
    }
    .content_right_long h3 {
        width: 98vw;
        margin: auto;
        margin-bottom: 8px;
    }
    .content_right_long .todo,
    .content_right_long .hasdown {
        overflow: visible;
        margin-left: 5px;
    }
    .content_right_long .todo li,
    .content_right_long .hasdown li {
        display: block;
        overflow: hidden;
        padding-left: 20px;
    }
    .content_right_long .todo li div,
    .content_right_long .hasdown li div {
        display: block;
        width: 87vw;
    }
    .content_right_long ul li .operations {
        position: absolute;
        width: 235px;
        top: 0;
        left: 98vw;
    }
    .content_right_long .down li .operations {
        width: 170px;
    }
    /* 三：遮罩层 之 长期计划添加/编辑 start */
    .mask {
        display: block;
    }
    .mask .add_longTodo {
        display: block;
    }
    /* 三：遮罩层 之 长期计划添加/编辑 start */
}